Grab cap



FIG. 1 is a right top perspective view of the grab cap showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines shown on the surface of the crown and the visor are stitch lines, and form a part of the claimed design. 

I claim the ornamental design for a grab cap, as shown and described. 